摘要
报道了在含Ｉ－的Ａｓ（Ⅲ）和罗丹明Ｂ混合溶液中直接注射Ｃｅ４＋，通过记录化学发光持续时间对微量Ｉ－进行定量的偶合化学发光法。检出限为６．０ ×１０－８ｍｏｌ／Ｌ，线性响应的浓度范围为１．０×１０－７～１．０×１０－５ｍｏｌ／Ｌ。该法简便易行，所受的干扰小，用于加碘食盐、酱油及实际水样中微量Ｉ－的测定，结果满意。
A new method of coupling chemiluminescence is reported for the determination of micro iodide ion based on the lasting time of chemiluminescence produced by injecting Ce (Ⅳ) to a mixed solution of As(Ⅲ) and rhodamine B in the presence of I-. The detection limit of the method is 6. 0 x 10-8 mol/L and the linear range is 1. 0 x 10-7-1. 0x10-5mol/L. This method with high selectivity is simple and can be applied to the determination of micro iodide ion in soy sauce, iodized salt and water sample with satisfactory results.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1997年第5期570-572,共3页
Chinese Journal of Analytical Chemistry
基金
安徽省教委科学研究基金资助项目
关键词
偶合化学发光
碘
罗丹明B
铈
砷
Coupling chemiluminescence, iodine, rhodamine B, arsenic, cerium
